Friction draft-rigging for railway-cars.



1.-?. oooNNoR. V FRIGTION DRAFT RIGGING. FOR RAILWAY CARS.

' l Patented May 25, 1909.

2 SHEETS-SHEET 2 APPLICATION FILED NOV 20, 190B 922,617. Fig

the side UNITED TAIFES lli/1I@TENI"V JOI-IN F. OCONNOR, OF CHICGO, ILLINOIS, ASSIGNOR TO W. H. MINER COMPANY, OF CHICAGO;

ILLINOIS, A CORPORATION OF ILLINOIS.

FRICTION DRAFT-RIGGING FOR RAILWAY-CARS.

Application filed November lthe well known tandem spring draft'rig ing having two springs arrangedtandem, our followers, one on each end of each springend side plates or stop castings having front, rear middle and intermediate stops for the followers to abutagainst; and it is sometimes desired'to apply a friction cushi ioning mechanism to such cars without removing therefrom'the tandem draft rigging side plates or stop castings. And the object of my invention is to provide a friction cushioning mechanism of a simple, efficient and durable construction which will be adapted for use in" and to cooperate with the side plates or stop castings of an ordinary tandem spring draft rigging, and with the draw bar and draft yoke thereof without further change.

My invention consists, in connection with the draw bar, draft yoke and side plates or stop castings of an ordin'ary tandem spring draft rigging and its front and rear followers, of a spring abutting'at one end against one of the followers, a friction mechanism, comprising a longitudinallymovable friction shell, a'

pair of f "ction shoes and awedge with antfriction rollers interposed between the wedge and shoes, the we ge bearing against the other follower, and an intermediate follower bearing against the inner end of the spring and adapted to abut against one of the middle stops, and having an extension or member projecting between the middle stops of lates and bearing against the' rear end of t ie friction. shoes, and a cou ling i member secured to the rear follower an extending through the spring and adapted at its front end to engage the friction shell and having couplinor lugs adapted to interengage with coupling lugs on .the shell member of the friction mechanism.

My invention also consists in the lnovel construction of parts and devices. and in the novel combinations of parts and devices Specification of Letters Patent.

or shoulders' Patented May 25, 1909. 2o, 190s. seria1N0.4ea,555.`

herein shown and described and specified in the claims.

ln the accompanying drawingforming a vation, partly in central vertical longitudinal section, of a friction draft rigging embodying my invention Fig. 2 is a longitudinal section on line 2 2 of Fig. I; Figs. 3, 4 and 5 are cross sections on lines 3 3, 4- 4 and respectively, of Fig. l 3 Fig. 6 is a detail plan view of the wedge of the friction mechanism Fig. 7 is a detail plan view of one of the fric'- tionshoes Fig. S is an elevation of the same; Fig. '9 is a detail view of the intermediate follower ,'Fig. 10 is a detail rear end elevation of the friction shell, and Fig. 1l is a detail elevation 'of the friction shell.

In the drawing A, represents the center sills or other draft members of the car frame to which the side plates or sto i castings are secured, A1 the front or end bar, B1 the draft yoke, C C1 the front and rear followers, and D D the side plates or stop 4castings having front,rear middle and intermediatestops d d d2 d3 d4 di de dl for the followers to abut against, the side plates D be ing of the ordinary construction commonly employed in a tandem spring draft rigging. E El are the springs abutting at their rear ends against the rearv follower C1.

F is a longitudinall G friction shoes within the shell, G1 a wedge between the friction shoes, G2 anti-friction rollers interposed between the wedge and the inclined or wedging faces g of the friction 'shoes H is an intermediate follower bearing at its rear end against the front end of the spring and at its front end against the rear end of the friction shoes, and M is a'coupling member bearing at its-rear end against the rear follower and adapted to bear at its front end against the rear end of the friction shell.

The longitudinally movable friction shell f against the front middle stop d2 and also against the intermediate stop and it is provided with an internal transverse web j" and with extensions f 2 having coupling lugs '3. The rear ends of lsaid extensions f3 are adapted to abut against shoulders m of the coupling member M. The couplingmember M is preferably of tubular form and secured at its rear end by a screw fm1 to the rear follower G1, and it is provided at its front end sil B the 4drawv movable friction shell,

Filis adapted to abut at its rear end shoulders part of this specification, Figure l is an ele- .y by turning-onepart in respect to the other.

' to so limit the compression in pulling, and

,v the other two intermediate stops similarlyv coperate with the intermediateflfollowcr H' Vfollower H 'is preferably in two separate ling member M, and to .accommodate the i spring in both plulling and bufling before the 1. In a friction draft rigging, the combina with a cou ling head fm2 having coupling lugs m3 adapte to interengage with the coupling lugsf3 of the friction shell F. The coupling member M is adapted to abut at its front end m4 against the inwardly projecting shoulder f4 on the friction shell F. The coupling head 'm2 ol' the coupling member M is adapted to enter the friction shell F through an e'longated opening or slotj'f therein, so that after the coupling member is so entered within the friction shell the coupling lugs of the friction shell and coupling member will interengage The intermediate longitudinally movable `follower H has an extension or member 7i preferably integral therewith, which proj ects etween the middle stops dzdz, d3 da of the side plates D, andabuts at'the front end k1 thereof against the friction shoes G, so that the spring will act against the friction shoes in both pulling andzlbuiling. The intermediate pieces or halves having a central space lor opening h2 between them to receive the coupcoupling head m2 thereof.

The friction shell F and the coupling member M have a limited sliding movement, one in respect to the other, and the intermediate follower H has a similar limited movement in the opposite direction before engaging the middle stop d3, as will be readily understood from Fig. 2 of the drawing ,-'this provides for a limited preliminary compression of the cushioning me anisml comes into operation, and enables the draft rigging to more effi ciently cushion light shocks or blows while not interfering with its eflicient cushioning of heavy ones. The springs EE1 are or may be one ofthe two sets of springs previously used' in the old tandem springv gear which is replaced in the car by my new improved friction and spring cushioning mechanism.

The side plates or stop castings have in ad dition to the front, rear and middle stops d d1 d2 d3 also thecustomary intermediate stops d'4 did @Z7 and the frontmost intermediate stop d4 coperates withy the front follower to limit the compression of `the cushioning devic'esin' bufling and the'rearmost intermediate sto d8 coperates with the rear follower and the shoulder f of the'friction shell F.

I claimf' tion of the draw bar, dra t yoke, front and rear followers and side plates having the front, rear, and middle stops of an ordinary tandemspring draft rig ing, of a combined spring and friction' cushioning mechanism coperatingltherewith, said spring and cash-- iomng mec anism being adapted to be substituted for the tandem springs and two in' terinediate followers of the ordinary'tandem spring gear, said combined spring and fric' tion cushioning mechanism comprisin a lonI gitudinally movable friction shell aving shoulders adapted to abut against the forward middle stops, and. friction shoes within said shell, and an intermediate follower adapted-to abut against the rearmost middle stop havingyan extension projecting'longitudinally between the middlel stops and',

hearing against the friction shoes', substan-- tially as specified. y

2. ln a friction draft rigging, the combination of the draw bar, draft yoke, front and front, rear, and middle stops of.- an' ordinary tandem spring draft rigging, of a combined spring and friction cushioning mechanism being adapted tobe substituted for the tansov 'rear followers and side plates havinfT the` dem springs and'two intermediate followers of the ordinary tandem spring gear, said combined spring and friction 'cushioning mechany ism comprising a longitudinally movable frice tion shell having shoulders adapted to 'abut against the foremost middle and an intermediate follower having an extension projecting longitudinally between the middle stops and bearing against the friction shoes, a coupling member bearing atits rear end against the rear follower and adapted to abut at its front end against said friction shell, and .said friction shell and coupling member having interyengaging coupling ings, lspibstantially as specified. I

3. ina friction draft rigging, the combination with side plates havin. front, rear and middle stops, of a draw arf/draft yoke, front and rear followers, a spring, a friction shell, friction shoes within-the shell,` a wedge, antifriction rollers between the wedge and friction shoes, an intermediate follower extending `between ,said intermediate stops of the side platesand bearing at one end against the friction shoes and at the other end against the spring, and acoiipling memv ber bearing at one end against one of the followers and at the other end against the friction shell, said friction shell Vbeing adapted to engageons of said middle stopslvand the intermediate followerthe other thereofsi1b stantially as specied.

4l., In a friction `draftrigging", the'combina tion .with side plates having front, rear and 'middlestopa of` a drawbar, draft yoke, front and rear followers, a-spring, a friction shell, friction shoes within the shell, a wedge, antifriction rollers between 'the wedge and fric- 'tion shoesg ian intermediate follower eXtending between said middle stops of the side lates andbearing at one end against the riction shoes and at thel other end against the spring, said friction shell being adapted to engage one of said middle stops and the interrriediate follower the other thereof, saidy .-4 the spring,

l at one end against one of the followersa'nd'at ing a limited' sliding movement one on the the other end against the friction shell, said l friction shell and coupling member having l coupling' lugs adapted 'to -inteienga'g'e l,by il turning the one in respect to the other, substantially as specified. 'i 5. In a friction draft rigging, the combination iith side plates having front, rear and middle stops, of a draw bar, draft yoke, front and rear followers, a spring, a friction shell, friction shoes within the shell, a wedge, antifriction rollers between thewedge an friction shoes, an intermediate follower eXtend- 1 ing between said middle stops of the side i plates and bearing friction shoes and at' the other end against and a coupling member bearing friction shell being adapted to engage one of v said middle stops and the intermediate follower the other thereof,` and a connecting link Abetween the friction shell and Wedge, l substantially as specified. l

6. In a friction draft rigging, the combination with side plates having front, rear and l middle stops,

at one end against the coupling lugs adapted to friction rollers Abetween 'the Z.wedge and friction shoes, an intermediate"follower extending betweeirsaid middle stops of the side plates and bearing at one end against the l friction shoes and at the other end against the spring, said friction shell being adapted to engage one of said middle Stops and the intermediate follower the other thereof, said friction shell and coupling Vmember having interengage by turning the one in respect to the other, and said friction shell and coupling member havother to provide f or a preliminary spring cushioninglaction before the friction cushioning devices come into action, substantially as specified.

JOHN F. OCONNOR. wWitnesses H. M. MUNDAY, ESTHER ABRAMS.

of a drawbnar, draft yoke, front and rear followers, a-.spring, a friction shell, friction shoes within the sh'ell,V a wedge, anti- 

